convex lens वाक्य

उदाहरण वाक्य

1. The layer covering the apothecia is about 30 lenticular ( having the shape of a double-convex lens ) in cross section, 0.1 0.3 mm in diameter, and covered with a dark brown layer of cells.
2. Convex lenses produce an image of an object at infinity at their focus; if the sun is imaged, much of the visible and infrared light incident on the lens is concentrated into the small image.
3. If the particle has a higher refractive index than the liquid surrounding it then it behaves as a convex lens and focuses a parallel beam of light on the side opposite the source of the light.
4. The sun ( a light bulb focused by a convex lens ) was shot in different passes to create realistic light effects on the Bird-of-Prey without having the light bleed around other elements in the shot.
5. According to Fresnel Diffraction theory a convex lens of focal length f will produce the exact Fourier transform at a distance f behind the lens of an object placed f distance in front of the lens.
6. This uses two plates of glass; one with a surface covered in several dozen, small ( < 10 mm ), convex lenses and the other moulded with corresponding, concave depressions, into which the lenses precisely fit.
7. He also described an improved telescope now known as the " astronomical " or " Keplerian telescope "  in which two convex lenses can produce higher magnification than Galileo's combination of convex and concave lenses.
8. After the invention of the telescope Kepler set out the theoretical basis on how they worked and described an improved version, known as the " Keplerian telescope ", using two convex lenses to produce higher magnification.
9. A proper kaleidoscope image can be achieved with a convex lens of such a focal length that the images of all surrounding objects were distinctly formed at the end of the reflectors and thus introduced into the reflected pattern.
10. Fortunately for him, around this time, an obscure Dutch optician ( legend has it that it was actually his pre-teen nephew ) invented the telescope, by the simple expedient of holding two convex lenses some distance apart, and looking through them simultaneously.